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First solution in Clear category for Compress List by book1978
from collections.abc import Iterable
def compress(items: list[int]) -> Iterable[int]:
if items:
a = [items[0]]
for i in items[1:]:
if i != a[-1]:
a.append(i)
return a
return []
print("Example:")
print(list(compress([5, 5, 5, 4, 5, 6, 6, 5, 5, 7, 8, 0, 0])))
# These "asserts" are used for self-checking
assert list(compress([5, 5, 5, 4, 5, 6, 6, 5, 5, 7, 8, 0, 0])) == [
5,
4,
5,
6,
5,
7,
8,
0,
]
assert list(compress([1, 1, 1, 1, 2, 2, 2, 1, 1, 1])) == [1, 2, 1]
assert list(compress([7, 7])) == [7]
assert list(compress([])) == []
assert list(compress([1, 2, 3, 4])) == [1, 2, 3, 4]
assert list(compress([9, 9, 9, 9, 9, 9, 9])) == [9]
assert list(compress([9, 9, 9, 9, 9, 9, 9, 0, 9, 9, 9, 9, 9, 9])) == [9, 0, 9]
print("The mission is done! Click 'Check Solution' to earn rewards!")
Jan. 14, 2025
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